Receiver for abrasive grindings or dust.



. T J. DAVIS.

RECEIVER FOR ABRASIVE GRINDINGS 0R DUST. APPLICATJON FILED-JUNE l6. 19:5.

1, 177,023, Patented Mar. 28, 1916.

3 SHEETS-SHEET 1- T. J. DAVIS.

RECEIVER FOR ABRASIVE GRINDINGS OR DUST.

APPLICATION man :umz 16. 1915.

1,17,23. Patented Mar. 28, 1916.

3 SHEETS-SHEET 2.

T. J. DAVIS.

RECEIVER FOR ABRASIVE GRINDINGS 0R DUST.

APPLICATION FILED JUNE16, 191s.

' 1,177,023. Patented Mar. 1916.

3SHEETS-- EE 3.

Wu new W $513 6 a g THOMAS JAMES DAVIS, OF NEW YORK, N. Y.

RECEIVER FOR ABRASIVE GRINDINGS R DUST.

Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed June 16, 1915. Serial No. 34,496.

To all whom it may concern:

Be it known that I, THoMAs J. DAVIS, a citizen of the United States, and resident of the borough of Brooklyn, county of Kings,

- city and State of New York, have invented certain new and useful Improvements in Receivers for Abrasive Grindings or Dust,-

of which the following is a specification.

. This application is one of a series which L0 have for their purpose the development of certain improvements in relation to the use of abrasive wheels and in this application I will set forth and describe what I term a dust box, but which is the receptacle into L5 which therefuse from the grinding wheels shall be deposited and retained.

In developing this invention I have had in mind the production of a-grinding attach- 'ment particularly useful to dentists and :0 others who for obvious reasons desire that the operation of grinding shall'be as cleanly as possible and shall ,conserve and preserve all of the material which is cut away by the action of the abrasivewheel from the article :5 being ground.

It will be understood that in the making of artificial teeth vmuch gold is used and that it is quite necessary'to grind and polish the surfaces of the gold and to cut away cerlO rain portions of the surface so that the final result shall .be the production of teeth attractive in appearance and of proper contour.

In the past it has been found difficult to #5 recover the gold which has been .ground away as the process of grinding will often remove small particles of enamel and of rubber used in the production of the teeth and gums and alsosmall portions of the L0 abrasive material and moistening tool or device which may become mixed with the gold to an extent that makes its separation impractical for the operator as the separation can only be accomplished by means of a 5 retort in a manner well understood. Now, however, I produce a receptacle or dust box which will receive all ofthe material ground awaytogether with the small particles of abrasive, and I so construct my dust box i0 that it may be used as a cradle or pan by means of which refuse material may be washed away, and the gold, which is of greater specific gravity, will remain in the bottom of the box. I also provide adjustable i5 support for my dust box and means which will adapt it to serve with abrasive wheels of different diameters.

The construction, method of operation and the advantages to be derived from this invention, will be fully set forth as the specification progresses.

The following is what I consider a good means of carrying out this invention and the accompanying drawings form a part of this specification, in which- Figure 1 is a front elevation of in completeddevice. Fig. 2 a plan view t ereof. Fig. 3 a side elevation of certain parts. Fig. 4 a fractional view, in perspective, of a part removed.

Similar reference numerals indicate like parts in all of the figures where they appear.

i My improvements are operable with a device commonly termed a' grinding lathe which consists of a small electric motor as indicated at 1 the shaft of which, passing through the bearing member indicated at 2,

terminates in an arbor 3, upon which, an

abrasive wheel 4 may be secured.

Motors of different sizes are used and "as v the bearings 2 are not of uniform diameter Iprovide an adjustable clamp adapted to engage bearings of different diameters and by means of which my devices are supported inoperable position. The clamp is formed of two engaging parts, a finger 5 being in pivotal engagement witha block 6; the free end of the finger 5 is oflset as indicated at 7, so that it will-not interfere either with the lubricating device 8 orwith any other memher which may be attached to the bearing 2.

Pivotally secured to the block 6 I arrange a plurality of L shaped members 9 and 10 one on each face of the block 6 and each secured thereto by means of a readily removable screw. The block 9 adjustably supports a rod 11 to which is secured a moistening device 12. Through the right angled pro jection 13 of the block 10 I pass a rod 14 and, adjustably retain it in the projection 13 by meansofa thumb screw 15. The rod'14 is L shaped and upon the lower horizontal extension of this rod 14 I support the member I purpose that shall appear later.

little surface to-the falling material to be" received in the box-alt will be noted that.

the upward projections of the corrugations do not extend to the top of the box, and it is my intention that they shall be lower than the line of a series of perforations 22 which I provide in one of the sides of the box for a theperforations 23 in the longer sides .of the box I pass a pin 24: and upon this pin I engage a cover formed of two parts as indicated at 25 and 26. The cover when extendf ed will close the entire top of the box or may I aeven project beyond the end thereof. When, however, the device is in operative position as shown in the figures, the cover is raised and serves as a means for deflecting the material thrown off by the abrasive wheel 4 causing the material to fall into the box and to be retained therein. The telescope of the cover enables it to be used'with equal satisfaction with abrasive wheels .of different diameters.

When considerable material has collected in the dust box 16, I may remove the box by releasing the screws 19. I may then'fill the box with water and by a slight rocking movement wash away the foreign matter in the box, allowing the gold or other metals to be'deposited in the bottom of the box. By additional quantities of water I may comletely pan the gold so that the residue will be only such materials as'I may desire to retain. By the use of this box and by panning the contents thereof I retain not all of the material thrown off by the wheel but only such portions as are of great value. It

is obvious that the panning may be dispensed with, as the waste material, all of which will be collected in the dust box, will have a ready sale even in its a'dulterated" form.

I have shown a peculiarly formed clamp and an adjustable moistening device the construction of which will be claimed in another application.

rugations that not only serve the useful purpose in the operation of panning but are so proportioned and arranged that when a Throughlarge piece of material accidentally leaves the hand of the operator and falls into the box itwill not pass to the bottom of the box there to mix with the damp matters collected by the box but will rest upon and across the tops of the corrugations where it may be readily removed in a clean condition.

Other modifications may be made within the scope of the appended claims without departing from the principle or sacrificing the advantages of this invention.

Having carefully and fully described my invention, to the best of my ability, what I claim and desire to secure by Letters Patent is- I 1. The combination with an abrasive wheel of a dust collector having a hinged and telescoping cover and means for adj ustably supporting said dust collecting means adjacent to an abrasive wheel as and for the purpose set forth.

2. The combination with an abrasive wheel of a moistening means and a dust collecting means and means for rotating the moistening and dust collecting means out of oper- V ative position as and for the purpose. set forth.

3.. The combination with an abrasive wheel of a dust collector, means comprising a box having a plurality of corrugations upon the mterior thereof, and means for adjustably supporting said box in operable position as herein specified.

4. A dust collecting box provided with a plurality of perforations through the side thereof and having a plurality of interior corrugations and means for supporting said box as and for the purpose set forth. .r.

5. A dust collecting box provided with a plurality of perforations and having a deflector hingedly engaged with said box and adapted to operate therewith as and for the purpose set forth.

6. A dust collecting box provided with a plurality of perforations through the side thereof and a telescoping deflector secured thereto, and means for adjustably supporting said box in operable position, as and for the purpose set forth.

7. A device of the character described comprising a box member the sides of which are perforated, and having corrugations within said box adapting it to serve the double function of a dust collector and panning device as and for the purpose set forth.

Signed at New York city, county and State of New York this 11th day of June, 1915, in the presence of these two witnesses,

THOMAS JAMES DAVISJ' Witnesses:

G. E. S. MARR, ARTHUR PHELPS MARK. 

